Scraper for carbide lamps



May 2o, 1924. 1,494,721

I S. G. THOMASSON SCRAPER AFOR CARBIDE LAMPS Filed June 12 1.923

@nrf 5. mamom Patented May 20, 1924.

SAMUEL G. THoMAssoN, or AsoNvInLE, 'INDANA SCRAPEB, Folie CARBIDELAMPS..r

Applicationled .Tune 12; 192,3. Serial No. 644,844.v

To all whom it may concern-f `Be it known that I, SAMUEL G. THOMAS- soN,a citizen of the United States, residing at Jasonville, in the county ofGreene and State of Indiana, have invented certain new and usefulImprovements in Scrapers for Carbide Lamps, of which the following is aspecification.

In carrying out the present invention, it is my purpose to provide ascraper within the usual carbide receptacle of miners lamps, wherebyduring the attachment or detachment of the receptacles to the watercontainers of the lamps, the carbide will be effectively scraped fromthe walls thereof.

The primary object of this invention is the provision of such a scraperthat is embodied directly within the said carbide receptacle, and is ofan extremely simple construction, and one that may be incorporated withcarbide lamps at a minimum expenditure.

The nature and advantages of the invention will be better understoodwhen the following detailed description is read in connection with theaccompanying drawings, the invention residing in the construction,combination, and arrangement of parts as claimed.

In the drawings forming part of this ap'- plication,

- cate slmilar parts in the several views, an

wherein:

Figure 1 is a side elevation, partly in cross section ofa conventionaltype carbide lamp, the carbide container thereof being equipped with myimproved scraping means.

Figure 2 is a detail transverse cross section upon the line 2-2 ofFigure 1, looking downwardly in the direction of the arrows.

Figure 3 is a vertical cross section upon the line 3-3 of the samefigure, and

Figure 4: is a transverse cross section upon the line 4-4 of the samefigure and looking upwardly in the direction of the arrows.

Referring to the drawings in detail, there is shown a carbide lamp ofconventional form embodying a water receptacle 5, and carbide container6. The said water receptacle 5' is formed with the usual pendentoutwardly flaring skirt portion 7, that is screw threaded at 8 forengaging the screw threads 9 of the usual neck 10 that is formed uponthe upper end of the inwardly converging portion 11 of said carbideconlike numerals of reference indi- M My improvement embodies theproxfisiori1 I of a pair :of' platel elements 12-ithatfl have closecontact with the interior ,of said cartheir` upperend sjatl for close1contact with the inwardly converging portion 1,1of said container. Theends of said inwardly converging portions 13 of the plates areintegrally joined together by a ring 14, that is formed at diametricallyopposite points with inwardly extending ears "15each of which is formedwith an opening and adapted for the reception of pendent pins 16, thatare formed upon the bottom wall of the water receptacle :Band engagethrough openings in a leather washer 17. This washer being present forobvious purposes.

`The lower ends of the plates 12 are integrally joined together, 'by across plate 18, this cross plate being centrally, loosely secured to thebottom wall of the carbide container 6 by a pivot element 19.

The plates 12 as well as their inwardly converging portions 13 areformed with teeth 2O uponopposite vertical edges thereof, it being notedfrom a consideration of Figure 2, that these plates are slightly arcuateshaped for conforming to the curvature of the container 6. The connectinplate 18 between the lower ends vof sai plates 12 is lalso formed withteeth 21, the teeth in this instance being formed upon opposite ed es ofthe cross plate that are at opposite si es of said pivot element 19.

In view of the above description, it will at once be apparent that asthe container 6 is being engaged with the water receptacle 5, the pins16 of the water receptacle will engage within the openings of said ears15 of the ring 14:, whereby through a continued rotary movement of thecontainer 6 with respect to the water receptacle 5, the plates. 12 andconnecting plate 18 will be rotated and effectively scrape the carbidefrom the walls of the container. It is of course to be understood thatthe edges of the plates 12 and cross plate 18 that carry said teeth arecutting edges as more clearly shown in Figure 2. y

Between the upper ends of the plates 12, there may be, and preferably isprovideda reinforcing ring 20 that is riveted or otherwise secured tothese plates, this ring effectively preventing displacement of theplates with respect to the interior surface of the carbide container 6.

bide container and converge inwardly iat-160 Numerous -advantages of ascraper for` carbide lamps of the present character will l 'from thespirit and scope of the invention as claimed.

Having thus described my invention, what I claim as new, and desire tosecure by Let# ters Patent, is: f

VA carbide lampv comprising a water con-- tainer, Aand a generating,chamber having screw threaded engagement with said water container,pins carried by the bottom of said container and adapted to project intothe generator chamber, when engaged with said container, a frameturnably mounted in said chamber and having a scraper blade adapted tomove along the inner surface of the wall of said chamber, said framebeing formed with openings adapted to receive said pins wherebythe'removal and attachment of the generating chamber to said waterchamber effects a rotation of the scraper in the chamber.

In testimony whereof I aix my signature.

SAMUEL G. THOMASSON..

